[COMMON] Bump ONAP version

Use version 9.0.0 for Istanbul
Also update the doc.

Issue-ID: OOM-1
Signed-off-by: Sylvain Desbureaux <sylvain.desbureaux@orange.com>
Change-Id: I03e11799bf487226784c98b04116f005c89d1e70
diff --git a/kubernetes/dcaegen2/components/dcae-healthcheck/Chart.yaml b/kubernetes/dcaegen2/components/dcae-healthcheck/Chart.yaml
index 0a0e942..d1af032 100644
--- a/kubernetes/dcaegen2/components/dcae-healthcheck/Chart.yaml
+++ b/kubernetes/dcaegen2/components/dcae-healthcheck/Chart.yaml
@@ -2,6 +2,7 @@
 # ================================================================================
 # Copyright (c) 2018 AT&T Intellectual Property. All rights reserved.
 # Modifications Copyright © 2018 Amdocs, Bell Canada
+# Modifications Copyright © 2021 Orange
 # ================================================================================
 # Licensed under the Apache License, Version 2.0 (the "License");
 # you may not use this file except in compliance with the License.
@@ -19,4 +20,4 @@
 apiVersion: v1
 description: ONAP DCAE Health Check
 name: dcae-healthcheck
-version: 8.0.0
+version: 9.0.0